mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
AI-generated identification · may be incorrectHardness: 3 on Mohs scale; Color: Pale yellow to honey gold; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral in three directions; Specific gravity: 2.71
- Hardness
- 3 on Mohs scale
- Color
- Pale yellow to honey gold
- Luster
- Vitreous to waxy
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Physical properties
Hardness: 3 on Mohs scale; Color: Pale yellow to honey gold; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: Perfect rhombohedral in three directions; Specific gravity: 2.71
Formation & geological history
Forms in sedimentary environments through chemical precipitation or as a primary mineral in igneous and metamorphic rocks. It often forms through the cooling of hot mineral-rich solutions in veins.
Uses & applications
Used as a decorative stone, in crystal healing practices, as an abrasive, and historically as a source of lime for cement and mortar.
Geological facts
Calcite is one of the most common minerals on Earth and is the primary constituent of limestone and marble. It exhibits double refraction, where light passing through a clear piece is split into two rays.
Field identification & locations
Identify by its 'soapy' or waxy feel and its reaction (bubbling/effervescing) when a drop of weak acid like vinegar is applied. It can be easily scratched by a copper penny or steel knife.
